Grilled Stuffed Portobello Mushrooms

Recipe posted in: Flex Meals & Snacks, Lunches & Dinners, Appetizers, Main Courses, Sides
Grilled Stuffed Portobello Mushrooms with tomatoes, spinach and parmesan cheese

If you’re following a plant-based diet, it’s common to feel left out at barbecues and cookouts. The grill is filled with burgers, chicken and steak while you’re stuck eating just the side dishes. However, vegetarians can participate in grill season, too! With a little creativity (and really tasty spices), you can turn an ordinary portobello mushroom into a meaty main course that’s both nutritious and delicious. Take this Grilled Stuffed Portobello Mushrooms recipe for example: It’s got all the grill flavor you crave during the summer! Plus, these grilled mushrooms are stuffed with a medley of fresh tomatoes, spinach and herbs for a vegetarian meal that’s perfect for summer picnics.

Not only do these stuffed portobellos taste delicious but they’re also quite simple to make! Learn how to grill portobello mushrooms in just a few steps: Get started by scraping out the gills from the mushroom caps and brushing them with olive oil and balsamic vinegar. Place the seasoned caps on the grill (gills side down) and cook over medium-high heat for five minutes.

Grilled Stuffed Portobello Mushrooms with tomatoes, spinach and parmesan cheeseWhile the grilled balsamic mushrooms are cooking to perfection, mix together a simple stuffing made from chopped tomatoes, chopped spinach, minced garlic, fresh oregano and black pepper. Remove the grilled mushrooms and stuff each one evenly with the tomato filling. Finally, top your stuffed portobellos with a sprinkle of parmesan cheese before you dig in.

 Healthy Hacks: Feel free to adjust the spices and vegetables to your taste buds! You can swap in your favorite flavors for a customized grilled mushroom meal. You can also enjoy the grilled portobello mushrooms without the filling, or enjoy the filling on the side as a side dish.

This recipe makes four servings, so it’s great for sharing at the cookout. You can also enjoy the leftovers all week for easy meal prep. One serving clocks just over 100 calories (103 to be exact!). If you’re on Nutrisystem, you can log one of these Grilled Stuffed Portobello Mushrooms as half of a PowerFuel, one Extra and one Vegetable in your NuMi app journal.

Pro Tip: You can make these grilled mushrooms a full Flex meal by enjoying two serving. This would count as one PowerFuel, two Extras and two Vegetable servings on the Nutrisystem plan. Just add a SmartCarb like some sweet corn on the cob or a summer pasta salad!

Looking for more plant-based meal ideas for your vegetarian weight loss plan? Check out these 23 easy meals from Nutrisystem! > They’re all perfectly portioned and simple to prepare. Plus, Nutrisystem delivers them right to your door for ultimate convenience!

If you love getting creative in the kitchen, be sure to whip up some of these 15 plant-based recipes that fit into your weight loss plan! >

If you loved this grilled mushroom recipe, you’ll definitely enjoy these other tasty ideas for cooking up mushrooms below:

Servings: 4

Calories per Serving: 103

On Nutrisystem, Count As: ½ PowerFuel, 1 Extra and 1 Vegetable


  • 4 portobello mushroom caps
  • 1 Tbsp. balsamic vinegar
  • 2 tsp. olive oil
  • 2 tomatoes, chopped
  • 2 cups spinach leaves, chopped
  • 1 clove garlic, minced
  • ¼ cup fresh oregano, chopped
  • ½ cup grated parmesan cheese
  • Black pepper, to taste


  1. Remove the gills from the mushroom caps. Brush the caps with olive oil and balsamic vinegar.
  2. Place mushrooms on the grill, gills side down. Grill over medium-high heat for 5 minutes.
  3. In the meantime, mix together the chopped tomatoes, spinach, garlic, oregano and black pepper.
  4. Divide the tomato mixture evenly between the 4 mushroom caps.
  5. Sprinkle with parmesan cheese before serving.
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